RS422 - 24V digital I/0 problem
RS422 - 24V digital I/0 problem
(OP)
Can any one help. I need to make a one-way Digital I/O connection between to devices. The output signal from device A is 24V (high). However The input device can only be configured to recieve TTL or RS422. TTL is 5V max(right?). Rs422 is 6V max (right?). If thse assumptions are right then I can't connect them directly (right?). What can I use as an interface between the two?
Thanks in advance, Churchie1
Thanks in advance, Churchie1





RE: RS422 - 24V digital I/0 problem
RE: RS422 - 24V digital I/0 problem
RE: RS422 - 24V digital I/0 problem
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: RS422 - 24V digital I/0 problem
RE: RS422 - 24V digital I/0 problem
4 to 4.5 V Zener and with a reversed Shottky to GND.
What is your input device ?(this determines the current and R values)
Plesae read FAQ240-1032
My WEB: <http://geocities.com/nbucska/>